Traveling plant for the generation of high-pressure steam



Aug. 27', 1929. o. H. HARTMANN TRAVELING PLANT FOR THE GENERATION OF HIGH PRESSURE STEAM Original Filed Sept. 23, 1924 U QQ 5 6.

a 1,726,106 PATENT OFFICE.

OTTO H. HABTMANN, OF CASSEL-WILHELMSHOHE, GERMANY, ASSIGNOR TO SCHMIDT- SCHE HEISSDAMPF-GESELLSCHAFT M.

MANY, A. CORPORATION OF GERMANY.

3. BL, OF GASSEL-WILHELMSHOHE, GER- TRAVELING PLANT FOR THE GENERATION OF HIGH-PRESSURE STEAM.

Original application filed September 23, 1924, Serial No. 739,255, and in Germany October 15, 1928.

Divided and this application filed .Tuly 19, 1927. Serial No. 206,980.

My invention relates to portable or traveling plants for the generation of high-pressure steam, especially for locomotives, the present invention being a ,division of my copending application Serial No. 739,255, filed Sept. 23, 1924.

The object of my invention is to provide a boiler plant for locomotives or the like which will be able to generate steam of higher pressure than hitherto usual for traveling plants and which will stand the special conditions prevailing in such plants. These consist in unavoidable jars, shocks and vibrations which occur with traveling plants while moving along the track or the street. The eniployment of water tube boilers in locomotives or the like has heretofore been a failure because of these jars and vibrations, which tend to loosen the connections between the tubes and the drums or like containers.

'With the object of overcoming these disadvantages, 1 make provisions for a boiler plant for locomotives, portable engines, steam plows, etc. designed to operate at steam pressures up to 100 atmospheres and more, and consisting of steam generating elements arranged in independent groups mainly extending lengthwise of the boiler. These groups consist of hollow members through which water, or some other suitable fluid is caused to flow and which enclose or traverse the firebox and a channel respectively, which channel serves to convey the combustion gases from said fire box. These groups are connected with upper steam and water drums and are adapted to be disconnected individually without interrupting the operation of the plant. Each group may be exchanged independently of the others. The new boiler plant is of very reliable op erationsince there is no danger of interruptions owing to injury to one of the members such as burning through, leaking or the like. Should there be any injury to a part of the plant, the defective portion or section can be thrown out of operation by means provided for this purpose while the other sections continue to operate, and thus the plant will remain in serviceable condition.

Certain special arrangements described hereinafter, serve further to perfect the operation of the boiler plant. A very impor-' tant feature of the boiler plant, constructed according to the present arrangement, consists 1n the fact that all parts serving for the generation of steam proper are so arranged that a locomotive engine embodying the present invention will not only be of the same general shape or type as existing engines, but will also be within the standard dimensions.

An example of the invention is illustrated in the accompanying drawings in connection with a high-pressure steam locomotive. Fig. 1 is a longitudinal vertical section on line 1-1 of Fig. 2. Fig. 2 is a longitudinal horizontal section on line 22 of Fig. 1. Fig. 3 is a section on line 33 of Fig. 1, 4 is a corresponding front elevation and Fig. 5 is a rear elevation with parts in section.

The boiler lant shown embodies a grate A on which t e fuel is burned, the combustion gases passing from the combustion chamber B through a longitudinal passage or channel 0 at the front end of which they escape through the smoke box and stack (not shown). The roof of the fire box and of the channel C is formed by tubular upper collectors 1 which are connected by upright pipes 3 with lower collectors 2, likewise of tubular character, which are arranged at the sides of the grate A. These collectors 1 and 2 extend the full length of the boiler plant, that is to say, from the smoke box to the engineers cab. Along the channel C the tubular members 1, 2 and 3 are in close contact with each other so that the channel 0 is closed to the outside and the combustion gases are compelled to travel through said channel and have no opportunity to escape therefrom either laterally or up or down. In order to obtain a still better utilization of the heat I may provide additional tubular members 4 extending from top to bottom of the channel C, between the side walls formed by theconnecting tubes 3, the members 4 being joined at their upper and lower ends to collectors 1 and 2 respectively.

The tubes 8 which are situated on the rear side of the fire box are divided into 'two groups which lie on opposite sides of the furnace door support 9. The tubes 8 of each group are connected at their upper ends to a cross collector 10, and at their lower ends to a cross collector 11. Each collector is connected to a collector tube 1 of the outer tube wall by means of a pipe 12, and each collector 11 is connected with an outer collector tube 2 by means of a pipe 13. In this manner, each grou of tubes 8 is joined in circuit with one or the series of outer tubes 3.

At the upper portion of the boiler plant, there are two large steam and water drums 5 connected with the respective ends of the collectors 1 by means of pipes 6, there bemg one such pipe for each collector at each end thereof. At those ends of the pi es6 which lead into the drums 5, I have s own check valves 6 opening towards the interior of said drums. The pipes 6 open directly into the water space of each drum 5 at one end thereof, and directly into the steam space thereof 'at the other end. The upper collectors 1, being in contact with each other, form a continuous wall which prevents the combustion gases from coming into contact with the drums 5. The said collectors therefore constitute a protecting wall for the drums 5. Each collector l is associated with one of the collectors 2 and with pipes 3 and 8, 4: and 6 to form a separate unit or group extending mainly lengthwise of the boiler. Each unit or group may be disconnected or even removed without materially afiecting the operation of the plant, since the other units will sufiice to generate steam until the defective unit has been repaired or replaced.

Each pair of the check valves 6 forms a means for closing the group or unit to which it belongs against the high pressure prevailing in drum 5 in case that unit becomes leaky, for instance, by an accident. In this case that unit will cease to participate in the generation of steam, but will be protected against the high pressure of the drum by means of the closed check valves. The oper ation of the plant as a whole may be continued until the leaking unit is replaced or made tight again.

Various modifications may be made without departing from the nature of my invention as set forth in the appended claims.

I claim:

1. A traveling boiler plant for generating high pressure steam, comprising a fire box, a channel for conveying the combustion gases from said fire box, a plurality of hollow collectors extending lengthwise of the boiler, said collectors being arranged in two vertically spaced substantially horizontal series, a plurality of hollow members connecting the upper and lower collectors of the corresponding series, said hollow members being substantially in contacting relation at the longitudinal sides of the fire box and channel and relatively spaced from each other at the interior of the channel, said collectors and hollow members being exposed to the heat of the gases of combustion, an upper steam and water drum, pipes connecting said collectors to said drum, and means for closing said connecting pipes individually against said drum to permit each set of collectors and hollow members to be individually disconnected without interrupting the operation of the plant.

2. A traveling boiler plant for generating high pressure steam, comprising a fire box, a channel for conveying the combustion gases from the firebox, a series of closely spaced hollow collectors arranged at the top of the firebox and channel, longitudinally of the boiler, a second series of collectors vertically spaced below the first mentioned series and arranged with its extreme outer members extending throughout the length of the boiler and its inner members forming the bottom of said channel, a plurality of hollow members connecting each collector of the upper series with a corresponding collector of the lower series, thus forming several independent boiler groups located side by side, a set of spaced tubes arranged at the rear wall of said fire box and connected between an extreme outer lower collector and its corresponding upper collector, a steam and water drum above the said groups, pipes connecting the upper hollow collectors with said drum, and means for closing said connecting pipes individually against said drum to permit said groups to be individually disconnected during operation of the plant.

OTTO H. HARTMANN. 

